Trimmer



jm 2i 13@ G. PRoDRoMos ET AL V gpg@ TRIMMER Filed Feb. 12, 1954 Patented Jan. 21, 1936 ATimeo STATES TRIMIMER George Prodromos and Marcus Prodromos, Winston-Salem, N. C.

Application February 12, 1934, Serial No. 710,930

6 Claims. (Cl. 287-53) This invention relates to sole and edge trimmers for shoes and the object of the invention is to provide a trimmer so formed that the edge trimming cutter may be easily removed.

Another object of the invention is to provide a guard for the trimmer that may be easily and expeditiously removed when it is desired to change cutters.

Another object of the invention is to provide an easily operable latching means for mounting the cutter guard on the shaft.

Another object of the invention is to provide a'latching means for holding the cutter and guard in assembled position on'the shaft which obviates the necessity of employing screws.

We accomplish the above, and other objects of the invention which will be apparent as the description proceeds, by means of the construction shown in the accompanying drawing, in which Fig. 1 is a perspective of the device constituting our invention, the cutter shaft being shown broken away;

Fig. 2 is a top plan of the device;

Fig. 3 is a top plan of the device with the cutter guard removed;

Fig. 4 is a top plan of the cutter guard;

Fig. 5 is a top plan of the cutter guard and a modified form of latching holding means; and

Fig. 6 is a section on the line 6 6 of Fig. 2, the shaft and latch holding means being in side elevation.

Fig. 7 is a perspective of the latch head shown in Figfe.

On the drawing, in which like reference characters indicate like parts on all the views thereof, I indicates the cutter shaft which may be mounted and driven in the manner common to machines of this character.V The shaft is provided at its outer end with a reduced portion 2 on which the edge trimming cutter 3 is mounted. The coiled spring 4 positioned between the cutter and the main portion of the shaft serves to maintain the cutter normally in its forward tion for cooperating with the edge trimming cutter by means of a coiled spring (not shown) in the manner well known in the art.

Secured to the reduced end of the shaft, and preferably integral therewith, is the latch element comprising the transverse head l which serves to hold the guard for the cutter in position as will presently appear.

The cutter guard 8 is provided with a diametrically extending slot 9 through which the latching head l may pass to assemble the cutter and guard on the shaft. The cutter and guard are free to slide and rotate on the shaft and are latched lthereto when the latch head is seated in the depressions I0 formed in the guard.

The guard is formed on its inner face with seats located between the projections II in which the outer faces o-f the cutter teeth I2 seat themselves when the guard and cutter are assembled on the shaft and latched thereto, thus ensuring that these elements do not move relatively to each other during operation' of the trimmer.

When the parts are in assembled relation the inner ends of the edge trimmer are received between the teeth of the second cutter as is common in constructions of this character. The cutter 3 is prevented from inward movement on the shaft by the flange 5', thereby maintaining the two -cutters in their proper relative positions.

When it is desired to change the cutter or the guard it is only necessary to press rearwardly on the guard against the action of the spring 4 until the latch head is disengaged from the depressions II), whereupon the guard and cutter may be rotated through an angle of n to bring the latch head into alignment with the openings in the guard; the guard and cutter can then be removed from the shaft.

In the construction shown in Fig. 5, the latch head is shown as formed with four radiating arms, the arms I3 being relatively longer than the arms I4. For use with this form of latch head, the cutter guard is formed with two diametrical openings at right angles to each other, the opening I5 being shorter than the opening I6, the opening I3 being just large enough to permit the passage of the shorter arms I4. In alignment with the opening I5 are grooves I'I into which the arms I3 will seat themselves when the latch head is in operative position to hold the guard and the cutter on the shaft. The operation of latching and unlatching the guard and latch are the same in this form of our invention as in that previously described.

It will thus be seen that We have provided a by these parts may be removed and replaced Without the necessity of removing and inserting screws for assembling and disassembling as in the constructions now in common use.

It is to be noted that while we have indicated the latching means as being integral with the shaft, it may be formed separately for attachment to machines already in use, in which case a hole would be formed in the end of the shaft by tapping or drilling and the stem of the latch inserted and secured in the hole.

Other modifications will suggest themselves t0- one skilled in the art and we do not desire to be limited except within the scope of the appended claims.

Having thus described our invention, what we claim as new and desire to secure by Letters Patent iszl. In a trimmer, a shaft, a toothed cutter mounted thereon, a guard in advance of said cutter, a spring on said shaft bearing against said cutter and serving normally to hold said cutter against said guard, said guard having a plurality of depressions on its under face in which the cutter teeth seat whereby relative rotation between said cutter and said guard is prevented, and means carried by said shaft for detachably latching said guard to said shaft.

2. In a trimmer, a shaft, a cutter mounted thereon, a guard in advance of said cutter, said guard having an opening therethrough, a spring on said shaft bearing against said cutter to hold it normally outwardly against said guard, means carried by the shaft for limiting the inward movement of said cutter, means carried by said shaft for detachably latching said guard to said shaft, said means comprising a head relatively rotatable with respect to said guard and adapted to pass through'the opening in said guard and be latched thereto by relative rotation of said guard and said latch head.

3. In a trimmer, a shaft, a cutter mounted thereon, a guard in advance of said cutter, said guard having a diametrical opening therethrough, means on said shaft for normally holding said cutter against said guard, means carried by said shaft for detachably latching said guard to said shaft, said means comprising an elongated head, said guard and said head being relatively rotatable whereby said head may be passed through said opening to the exterior of said guard and said guard then latched to said shaft by relative rotation of said guard and said head.

4. In a trimmer, a shaft, a cutter slidably mounted thereon, a guard rotatably mounted with respect to said shaft and in advance of said cutter, said guard having an opening therethrough and a depression at an angle to said opening, means on said shaft for normally holding said cutter and said guard against movement with relation to said shaft, said means comprising a latch on said shaft so constructed and arranged that it may pass through the opening in said guard to the exterior thereof and upon relative rotation of said guard and said latch will seat itself in the depression in said guard and thereby latch the guard to the shaft.

5. In a trimmer, a shaft, a cutter slidably mounted thereon, a guard associated with said shaft in advance of said cutter and relatively rotatable with relation to said shaft, said guard having a pair of openings therethrough at an angle to each other, one opening being of less extent than the other, means for latching said guard to said shaft, said means comprising a head carried by said shaft, said head having a pair of radiating arms, one 0f said arms being shorter than the other, the shorter arms being of such size that it Will pass through the opening of less extent in the guard, and the other arm being of such size that it will pass through the other opening in the guard but will be prevented from passing through the opening of less extent.

6. In a trimmer, a shaft, a cutter mounted thereon, a guard in advance of said cutter and mounted for relative rotation with respect to said shaft, said guard having a pair of diametrical openings therethrough, one opening being shorter than the other, means carried by said shaft for latching said guard against rotation with respect to said shaft, said means comprising two pairs of radial arms, one pair being shorter than the other and of substantially the same length as the shorter opening, and the other pair of arms being of substantially the same length as the longer opening, and a depression in alignment with the shorter opening in which the longer pair of arms may seat to latch the guard against rotation with respect to the shaft.

GEORGE PRODROMOS. MARCUS PRODROMOS. 

